martin luther king, jr. president obama stained a bookcase at a elementary school. >> everybody here, adult to children, understands the importance of giving back. >> reporter: last night katy perry, usher and others performed at a kid's inaugural ball honoring military families and their children. the first lady and her daughters were there as michelle obama kicked off three days of parties and ball to celebrate her husband's re- election. randall pinkston, cbs news, washington. >>> meanwhile in international news today, algerian bomb squads found numerous bodies as they search for explosives at a gas plant. algerian special forces raided the plant yesterday to end the standoff with islamic militants. it is said all 32 militant were cleared and it is unclear as whether any hostages were rescueed in the raid. 22 are dead but the number could rise. >>> and the government is warning about the risk of traveling to that area. there are risks that remain. state and department staff in the country with leave if th